NIW I485 approval from VSC

For my case
NIW VSC
I140 RD Nov 2003
I140 AD Nov 2004

I485 RD Dec 2003
First FP sep 2004
I485 tranfer to local office in New York- Dec 2004
I485 transfer back to VSC –Dec 2005
Get help from local Congressman for inquiry
VSC Ask for more evidence-July 2006
Told my Congressman that name checked has been cleared
Second FP –Oct 2006
Approval Notice-Dec 4th, 2006